On Tuesday 21 October 2008 08:32:12 Abdulaziz Ghuloum wrote: > On Oct 21, 2008, at 11:04 AM, Ken Dickey wrote: > > No. Actually, I'd like a holds-for-all which returns #f as the > > base case. > > You can push it down, but you can't escape making these > exceptions.
The law of the excluded third has a number of possible outcomes: #t #f not-applicable undecided unknown outcome undecided is sometimes divided into undecidable, here are a list of conditions which would make the preposition decidable, .. I am not saying that there is no check for existence of elements. I am saying that there is no relation holding between elements when there are no elements. Cheers, -KenD "In theory, theory and practice are the same, but in practice they differ." Engineer's axiom _______________________________________________ r6rs-discuss mailing list r6rs-discuss@lists.r6rs.org http://lists.r6rs.org/cgi-bin/mailman/listinfo/r6rs-discuss
